Fair Value Measurements - Fair Value of Assets and Liabilities on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023
ASSETS
Marketable securities	$ 147,772	$ 139,612
LIABILITIES
Convertible senior notes, net, noncurrent	267,156	266,843
Fair Value, Measurements, Recurring \| Carrying Value
ASSETS
Cash and cash equivalents	70,325	98,719
Restricted cash and cash equivalents	7,580	7,269
Marketable securities	147,772	139,612
Total	225,677	245,600
LIABILITIES
Contingent consideration related to acquisitions	3,900	3,800
Convertible senior notes, net, noncurrent	267,156	266,843
Total	271,056	270,643
Fair Value, Measurements, Recurring \| Carrying Value \| Cash and Money Market Funds
ASSETS
Cash and cash equivalents	56,632	73,754
Fair Value, Measurements, Recurring \| Carrying Value \| Commercial Paper
ASSETS
Cash and cash equivalents	13,693	10,795
Marketable securities	16,359	18,141
Fair Value, Measurements, Recurring \| Carrying Value \| United States Treasury Securities
ASSETS
Cash and cash equivalents		9,979
Marketable securities	73,083	56,890
Fair Value, Measurements, Recurring \| Carrying Value \| Corporate Notes and Bonds
ASSETS
Cash and cash equivalents		3,349
Marketable securities	22,419	26,590
Fair Value, Measurements, Recurring \| Carrying Value \| Agency Securities
ASSETS
Cash and cash equivalents		842
Marketable securities	35,911	37,991
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring \| Fair Value
ASSETS
Cash and cash equivalents	56,632	73,754
Restricted cash and cash equivalents	7,580	7,269
Marketable securities	0	0
Total	64,212	81,023
LIABILITIES
Contingent consideration related to acquisitions	0	0
Convertible senior notes, net, noncurrent	0	0
Total	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring \| Fair Value \| Cash and Money Market Funds
ASSETS
Cash and cash equivalents	56,632	73,754
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring \| Fair Value \| Commercial Paper
ASSETS
Cash and cash equivalents	0	0
Marketable securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring \| Fair Value \| United States Treasury Securities
ASSETS
Cash and cash equivalents		0
Marketable securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring \| Fair Value \| Corporate Notes and Bonds
ASSETS
Cash and cash equivalents		0
Marketable securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Fair Value, Measurements, Recurring \| Fair Value \| Agency Securities
ASSETS
Cash and cash equivalents		0
Marketable securities	0	0
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Fair Value
ASSETS
Cash and cash equivalents	13,693	24,965
Restricted cash and cash equivalents	0	0
Marketable securities	147,772	139,612
Total	161,465	164,577
LIABILITIES
Contingent consideration related to acquisitions	0	0
Convertible senior notes, net, noncurrent	267,156	266,843
Total	267,156	266,843
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Fair Value \| Cash and Money Market Funds
ASSETS
Cash and cash equivalents	0	0
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Fair Value \| Commercial Paper
ASSETS
Cash and cash equivalents	13,693	10,795
Marketable securities	16,359	18,141
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Fair Value \| United States Treasury Securities
ASSETS
Cash and cash equivalents		9,979
Marketable securities	73,083	56,890
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Fair Value \| Corporate Notes and Bonds
ASSETS
Cash and cash equivalents		3,349
Marketable securities	22,419	26,590
Significant Other Observable Inputs (Level 2) \| Fair Value, Measurements, Recurring \| Fair Value \| Agency Securities
ASSETS
Cash and cash equivalents		842
Marketable securities	35,911	37,991
Unobservable Inputs (Level 3)
ASSETS
Total	0
LIABILITIES
Total	0
Unobservable Inputs (Level 3) \| Fair Value, Measurements, Recurring \| Fair Value
ASSETS
Cash and cash equivalents	0	0
Restricted cash and cash equivalents	0	0
Marketable securities	0	0
Total	0	0
LIABILITIES
Contingent consideration related to acquisitions	3,900	3,800
Convertible senior notes, net, noncurrent	0	0
Total	3,900	3,800
Unobservable Inputs (Level 3) \| Fair Value, Measurements, Recurring \| Fair Value \| Cash and Money Market Funds
ASSETS
Cash and cash equivalents	0	0
Unobservable Inputs (Level 3) \| Fair Value, Measurements, Recurring \| Fair Value \| Commercial Paper
ASSETS
Cash and cash equivalents	0	0
Marketable securities	0	0
Unobservable Inputs (Level 3) \| Fair Value, Measurements, Recurring \| Fair Value \| United States Treasury Securities
ASSETS
Cash and cash equivalents		0
Marketable securities	0	0
Unobservable Inputs (Level 3) \| Fair Value, Measurements, Recurring \| Fair Value \| Corporate Notes and Bonds
ASSETS
Cash and cash equivalents		0
Marketable securities	0	0
Unobservable Inputs (Level 3) \| Fair Value, Measurements, Recurring \| Fair Value \| Agency Securities
ASSETS
Cash and cash equivalents		0
Marketable securities	$ 0	$ 0

NEXTGEN HEALTHCARE, INC. 10-Q