CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) $ in Thousands	Total	Common stock	Paid-in capital	Retained earnings	Non controlling interest	Accum other comp loss	Series A preferred stock	Series B preferred stock
Beginning Balance at Dec. 31, 2017	$ 268,609	$ 174	$ 153,088	$ 134,254	$ 567	$ (19,490)	$ 1	$ 15
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred dividends paid	(45)			(45)
Compensation expense for restricted stock	1,497		1,497
Tax related items for share based awards	(136)		(136)
Issuance of shares of common stock	894		894
Currency translation adjustment	(1,511)					(1,511)
Net income	16,057			16,113	(56)
Ending Balance at Jun. 30, 2018	285,365	174	155,343	150,322	511	(21,001)	1	15
Beginning Balance at Mar. 31, 2018	274,279	174	154,664	138,782	510	(19,867)	1	15
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred dividends paid	(22)			(22)
Compensation expense for restricted stock	761		761
Tax related items for share based awards	(82)		(82)
Currency translation adjustment	(1,134)					(1,134)
Net income	11,563			11,562	1
Ending Balance at Jun. 30, 2018	285,365	174	155,343	150,322	511	(21,001)	1	15
Beginning Balance at Dec. 31, 2018	308,254	174	156,190	169,735	1,406	(19,267)	1	15
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred dividends paid	(45)			(45)
Compensation expense for restricted stock	1,029		1,029
Tax related items for share based awards	(128)		(128)
Issuance of shares of common stock	0
Currency translation adjustment	563					563
Net income	20,537			20,750	(213)
Ending Balance at Jun. 30, 2019	330,210	174	157,091	190,440	1,193	(18,704)	1	15
Beginning Balance at Mar. 31, 2019	316,581	174	156,651	177,003	1,302	(18,565)	1	15
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred dividends paid	(22)			(22)
Compensation expense for restricted stock	524		524
Tax related items for share based awards	(84)		(84)
Issuance of shares of common stock	0
Currency translation adjustment	(139)					(139)
Net income	13,350			13,459	(109)
Ending Balance at Jun. 30, 2019	$ 330,210	$ 174	$ 157,091	$ 190,440	$ 1,193	$ (18,704)	$ 1	$ 15