Consolidated Statement of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2017	$ 299	$ 97,873	$ 150,236	$ 915	$ 249,323
Balance (in Shares) at Dec. 31, 2017	29,955
Stock-based compensation		1,972			1,972
Stock issued on vesting of RSUs (in Shares)	2
Taxes paid on vesting of RSUs		(4)			(4)
Taxes paid on vesting of RSUs (in Shares)	1
Dividends			(1,236)		(1,236)
Net income			2,132		2,132
Balance at Mar. 31, 2018	$ 299	99,841	152,047		252,187
Balance (in Shares) at Mar. 31, 2018	29,956
Impact from adoption of new accounting standards			915	$ (915)
Balance at Dec. 31, 2018	$ 302	100,742	153,830		254,874
Balance (in Shares) at Dec. 31, 2018	30,245
Stock-based compensation		494			494
Dividends			(1,241)		(1,241)
Net income			7,000		7,000
Balance at Mar. 31, 2019	$ 302	$ 101,236	$ 159,589		$ 261,127
Balance (in Shares) at Mar. 31, 2019	30,245