Supplemental Guarantors Consolidating Condensed Financial Information (Statement of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Condensed Financial Statements, Captions
REVENUE	$ 20,595	$ 11,950
EXPENSES:
Depreciation and amortization	22,263	15,101
Cost of sales	10	22
Selling, general and administrative	5,646	5,959
Total operating expenses	27,919	21,082
LOSS FROM OPERATIONS	(7,324)	(9,132)
Interest expense, net	(6,210)	(6,356)
Foreign currency exchange gains (losses)	(51)	173
Other income	0	6
Loss before income taxes and equity in loss of subsidiaries	(13,585)	(15,309)
Benefit for income taxes	(206)	(1,445)
Equity in loss of subsidiaries	0	0
NET LOSS	(13,379)	(13,864)
Consolidation, Eliminations [Member]
Condensed Financial Statements, Captions
REVENUE	(341)	(343)
EXPENSES:
Depreciation and amortization	(13)	(13)
Cost of sales	(14)	0
Selling, general and administrative	(327)	(328)
Total operating expenses	(354)	(341)
LOSS FROM OPERATIONS	13	(2)
Interest expense, net	0	0
Foreign currency exchange gains (losses)	0	0
Other income		0
Loss before income taxes and equity in loss of subsidiaries	13	(2)
Benefit for income taxes	0	0
Equity in loss of subsidiaries	7,507	12,876
NET LOSS	7,520	12,874
Parent [Member]
Condensed Financial Statements, Captions
REVENUE	0	0
EXPENSES:
Depreciation and amortization	0	0
Cost of sales	0	0
Selling, general and administrative	123	213
Total operating expenses	123	213
LOSS FROM OPERATIONS	(123)	(213)
Interest expense, net	(5,874)	(5,656)
Foreign currency exchange gains (losses)	0	0
Other income		0
Loss before income taxes and equity in loss of subsidiaries	(5,997)	(5,869)
Benefit for income taxes	0	0
Equity in loss of subsidiaries	(7,382)	(7,995)
NET LOSS	(13,379)	(13,864)
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions
REVENUE	13,802	10,474
EXPENSES:
Depreciation and amortization	16,116	8,910
Cost of sales	10	15
Selling, general and administrative	4,627	4,087
Total operating expenses	20,753	13,012
LOSS FROM OPERATIONS	(6,951)	(2,538)
Interest expense, net	(321)	(607)
Foreign currency exchange gains (losses)	0	0
Other income		6
Loss before income taxes and equity in loss of subsidiaries	(7,272)	(3,139)
Benefit for income taxes	(2)	(27)
Equity in loss of subsidiaries	(125)	(4,881)
NET LOSS	(7,395)	(7,993)
Non-Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions
REVENUE	7,134	1,819
EXPENSES:
Depreciation and amortization	6,160	6,204
Cost of sales	14	7
Selling, general and administrative	1,223	1,987
Total operating expenses	7,397	8,198
LOSS FROM OPERATIONS	(263)	(6,379)
Interest expense, net	(15)	(93)
Foreign currency exchange gains (losses)	(51)	173
Other income		0
Loss before income taxes and equity in loss of subsidiaries	(329)	(6,299)
Benefit for income taxes	(204)	(1,418)
Equity in loss of subsidiaries	0	0
NET LOSS	$ (125)	$ (4,881)