Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Unrealized gain (loss) on derivatives, tax expense (benefit)	$ (3,100)	$ (5,700)
Cash dividends declared per share			$ 0.73
Repurchase of treasury stock, Shares	3,654,816
Accumulated Other Comprehensive (Loss) Income [Member]
Unrealized gain (loss) on derivatives, tax expense (benefit)	$ 3,111	$ 5,735	$ (2,713)