CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive income (loss)	Noncontrolling interest in subsidiary
Beginning Balance at Dec. 31, 2017	$ 353,078	$ 6,089	$ 300,866	$ 220,104	$ (191,737)	$ 17,756
Change in accounting principle- ASU 2016-01 at Dec. 31, 2017				46,069	(46,069)
Balance at January 1, 2018, as adjusted at Dec. 31, 2017	353,078	6,089	300,866	266,173	(237,806)	17,756
Net income	14,735			14,248		487
Other comprehensive income, net of tax	3,501				3,501
Dividends paid to noncontrolling interest	(83)					(83)
Ending Balance at Mar. 31, 2018	371,231	6,089	300,866	280,421	(234,305)	18,160
Beginning Balance at Dec. 31, 2018	303,558	6,090	301,139	225,156	(248,270)	19,443
Net income	15,726			15,204		522
Other comprehensive income, net of tax	733				733
Dividends paid to noncontrolling interest	(117)					(117)
Ending Balance at Mar. 31, 2019	$ 319,900	$ 6,090	$ 301,139	$ 240,360	$ (247,537)	$ 19,848