Earnings Per Share - Schedule of Earnings Per share, Basic and Diluted (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Basic Earnings Per Share:
Reported net income	$ 7,270	$ 8,135	$ 9,220	$ 18,452
Less: Redeemable preferred stock dividends and accretion	(7,917)	(8,135)	(15,688)	(16,204)
Less: European non-controlling redeemable equity dividend	(262)	(511)	(383)	(1,084)
Basic numerator	$ (909)	$ (511)	$ (6,851)	$ 1,164
EARNINGS (LOSS) PER SHARE – BASIC	$ (0.04)	$ (0.02)	$ (0.27)	$ 0.05
Weighted average shares outstanding-Basic	25,106	25,001	25,070	24,969
Diluted Earnings Per Share:
Reported net income	$ 7,270	$ 8,135	$ 9,220	$ 18,452
Less: Redeemable preferred stock dividends and accretion	(7,917)	(8,135)	(15,688)	(16,204)
Less: European non-controlling redeemable equity dividend	(262)	(511)	(383)	(1,084)
Diluted numerator	$ (909)	$ (511)	$ (6,851)	$ 1,164
EARNINGS (LOSS) PER SHARE – DILUTED	$ (0.04)	$ (0.02)	$ (0.27)	$ 0.05
Dilutive effect of common share equivalents				39
Weighted average shares outstanding-Diluted	25,106	25,001	25,070	25,008