Summary of Significant Accounting Policies - Balance Sheet Restatements and Reclassifications (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accounts receivable	$ 17,839		$ 7,487
Inventories	3,258		3,666
Prepaid expenses and other current assets	5,894		8,064
Total current assets	181,186		166,401
Other	7,531		167
Total assets	245,482		215,081
Current portion of long-term related party payable	34,177		25,204
Accounts payable	7,105		5,048
Accrued expenses	17,222		9,308
Income taxes	1,200		0
Total current liabilities	62,421		45,248
Long-term related party payable	135,170		97,489
Deferred taxes			0
Other	5,275		2,526
Total liabilities	203,413		145,947
Accumulated deficit	(319,800)		(278,524)
Total shareholders' equity	42,069		69,134	$ 25,025	$ (8,819)
Total liabilities and shareholders' equity	$ 245,482		215,081
As Filed
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accounts receivable			6,978
Inventories			4,155
Prepaid expenses and other current assets			7,989
Total current assets			166,306
Other			158
Total assets			214,977
Current portion of long-term related party payable			28,614
Accounts payable			10,565
Accrued expenses			3,598
Income taxes			323
Total current liabilities			48,788
Long-term related party payable			94,079
Deferred taxes			1,351
Other			2,210
Total liabilities			147,112
Accumulated deficit			(279,793)
Total shareholders' equity			67,865
Total liabilities and shareholders' equity			214,977
(e)
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accounts receivable			509
Inventories			0
Prepaid expenses and other current assets			0
Total current assets			509
Other			0
Total assets			509
Current portion of long-term related party payable			0
Accounts payable			(5,517)
Accrued expenses			5,710
Income taxes			0
Total current liabilities			193
Long-term related party payable			0
Deferred taxes			0
Other			316
Total liabilities			509
Accumulated deficit			0
Total shareholders' equity			0
Total liabilities and shareholders' equity			509
(g)
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accounts receivable			0
Inventories			0
Prepaid expenses and other current assets			75
Total current assets			75
Other			9
Total assets			84
Current portion of long-term related party payable			0
Accounts payable			0
Accrued expenses			0
Income taxes			76
Total current liabilities			76
Long-term related party payable			0
Deferred taxes			8
Other			0
Total liabilities			84
Accumulated deficit			0
Total shareholders' equity			0
Total liabilities and shareholders' equity			84
(a) | Correction of Immaterial Errors
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accounts receivable			0
Inventories			0
Prepaid expenses and other current assets			0
Total current assets			0
Other			0
Total assets			0
Current portion of long-term related party payable			0
Accounts payable			0
Accrued expenses			0
Income taxes			(228)
Total current liabilities			(228)
Long-term related party payable			0
Deferred taxes			(1,359)
Other			0
Total liabilities			(1,587)
Accumulated deficit			1,587
Total shareholders' equity			1,587
Total liabilities and shareholders' equity			0
(c) | Correction of Immaterial Errors
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accounts receivable			0
Inventories		$ 489	(489)
Prepaid expenses and other current assets			0
Total current assets			(489)
Other			0
Total assets			(489)
Current portion of long-term related party payable			0
Accounts payable			0
Accrued expenses			0
Income taxes			(171)
Total current liabilities			(171)
Long-term related party payable			0
Deferred taxes			0
Other			0
Total liabilities			(171)
Accumulated deficit			(318)
Total shareholders' equity			(318)
Total liabilities and shareholders' equity			(489)
(d) | Correction of Immaterial Errors
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Accounts receivable			0
Inventories			0
Prepaid expenses and other current assets			0
Total current assets			0
Other			0
Total assets			0
Current portion of long-term related party payable			(3,410)
Accounts payable			0
Accrued expenses			0
Income taxes			0
Total current liabilities			(3,410)
Long-term related party payable			3,410
Deferred taxes			0
Other			0
Total liabilities			0
Accumulated deficit			0
Total shareholders' equity			0
Total liabilities and shareholders' equity			$ 0