UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
Revenue from services	$ 86,169	$ 90,153
Cost of services excluding depreciation and amortization expense	57,774	59,511
Depreciation and amortization expense included in cost of services	3,251	4,199
Gross profit	25,144	26,443
Selling, general and administrative expenses	6,517	6,746
Income from operations	18,627	19,697
Other income (expense):
Interest expense, net	(8,358)	(4,028)
Foreign exchange gain, net	311	1,625
Other expense, net	(13)	(5)
Total other expense, net	(8,060)	(2,408)
Income before income taxes	10,567	17,289
Provision for income taxes	1,740	665
Net income	8,827	16,624
Less: net income attributable to noncontrolling interest	1,982	2,384
Net income attributable to the Corporation	$ 6,845	$ 14,240
Net income attributable to the Corporation per common share:
Basic (usd per share)	$ 0.73	$ 110.16
Diluted (usd per share)	$ 0.73	$ 110.08
Weighted average shares:
Basic (in shares)	9,358,529	129,269
Diluted (in shares)	9,391,022	129,356