Subsequent Event	9 Months Ended
Subsequent Event	Sep. 30, 2017
Subsequent Events [Abstract]
Subsequent Event	(13) Subsequent Event On October 9, 2017, The Company received notice that a putative class action lawsuit was filed in the Circuit Court of the Thirteenth Judicial Circuit in Hillsborough, Florida against the Company, each of the members of its board of directors and CenterState, captioned Stephen Bushansky, On Behalf of Himself and All Others Similarly Situated v. Sunshine Bancorp, Inc., Ray H. Rollyson, Jr., D. William Morrow, Joe E. Newsome, Will Weatherford, William E. Pommerening, Marion M. Smith, W.D. McGinnes, Jr., George Parmer, Kenneth H. Compton, Malcolm Robert Kirschenbaum, James T. Swann, Sal A. Nunziata, John C. Reich, Andrew S. Samuel, Dana S. Kilborne and CenterState Bank Corporation. The complaint alleges, among other things, that these persons breached their fiduciary duties in connection with the proposed CS Merger by, among other things: agreeing to an allegedly unfair price for the sale of the Company; agreeing to protection devices that the plaintiff alleges is impermissible; and approving the transaction notwithstanding alleged conflicts of interest. The complaint also alleges that CenterState aided and abetted those alleged fiduciary breaches. The plaintiff also alleges that the proxy statement/prospectus filed in connection with the CS Merger was materially incomplete and misleading. The plaintiff seeks as relief, among other things, for the court to declare that the defendants have breached their fiduciary duties; to enjoin defendants from proceeding with the CS Merger unless and until the Company provides all material information to its stockholders and adopts a procedure to obtain a merger agreement providing the best available terms; to award plaintiff fees and expenses; and to grant such other and further relief as the court deems just and proper. The outcome of the pending and any additional future litigation is uncertain. If this case is not resolved, this lawsuit could prevent or delay completion of the CS Merger and result in substantial costs to the Company and CenterState, including any costs associated with the indemnification of directors and officers. One of the conditions to the closing of the CS Merger is that no order, injunction or decree or other legal restraint or prohibition that prevents consummating the merger, the bank merger or any of the other transactions contemplated by the Merger Agreement will be in effect. As such, if the plaintiff is successful in obtaining an injunction prohibiting the completion of the CS Merger on the agreed-upon terms, then such injunction may prevent the CS Merger from being completed, or from being completed within the expected timeframe. The defense or settlement of any lawsuit or claim that remains unresolved at the time the CS Merger is completed may adversely affect CenterState’s business, financial condition, results of operations and cash flows. The defendants strongly believe that the lawsuit is without merit and intend to vigorously defend against the pending claims.

Sunshine Bancorp, Inc. 10-Q