Long-term Debt - Additional Information (Detail) - USD ($)	1 Months Ended		12 Months Ended
	Oct. 31, 2015	Apr. 30, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2016	Jun. 30, 2016	Oct. 30, 2015	Oct. 31, 2014
Line of Credit Facility [Line Items]
Loss on extinguishment of debt			$ 0	$ (581,000)	$ 0
Increase in annual revenue in fiscal years	$ 15,000,000
Minimum liquidity covenant	2,000,000
Annual revenue requirements	55,000,000
Annual revenue recognize description			The term loan agreement also includes a $2.0 million minimum liquidity covenant and revenue-based financial covenants, which was $55.0 million for 2015 with annual increases of $15.0 million for each subsequent fiscal year thereafter
Property and equipment, net			$ 9,414,000	6,366,000
Accumulated depreciation			12,435,000	10,281,000
Leased Property [Member]
Line of Credit Facility [Line Items]
Property and equipment, net			716,500,000	668,500,000
Accumulated depreciation			286,600,000	102,600,000
Series D Preferred Stock [Member]
Line of Credit Facility [Line Items]
Number of shares issuable upon exercise of warrants						76,940
Exercise price of warrants						$ 8.45
Series E Preferred Stock [Member]
Line of Credit Facility [Line Items]
Number of shares issuable upon exercise of warrants					10,418	20,837
Exercise price of warrants						$ 14.40
Term Loan Facility [Member]
Line of Credit Facility [Line Items]
Credit facility, additional borrowing capacity					$ 5,000,000	$ 13,000,000
Maximum [Member] | Series E Preferred Stock [Member]
Line of Credit Facility [Line Items]
Fair value of warrants, volatility rate assumed						61.00%
Fair value of warrants, risk free rate assumed						2.20%
Minimum [Member] | Series E Preferred Stock [Member]
Line of Credit Facility [Line Items]
Fair value of warrants, volatility rate assumed						57.00%
Fair value of warrants, risk free rate assumed						1.63%
Term Loan Agreement [Member]
Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity	$ 60,000,000	$ 45,000,000
Credit facility, outstanding		20,000,000	41,500,000
End of term payment		1,000,000
Amount of make-whole premium payment		300,000
Credit facility additional borrowing										$ 10,000,000
Total charge to interest expense		1,400,000
Loss on extinguishment of debt		$ 600,000
Percentage of accrue interest	12.00%
Percentage of deferred payment									3.00%
Deferred interest			1,500,000	30,400,000
Credit facility, additional borrowing capacity			$ 10,000,000
Percentage of redemption fee			4.00%
Principal and interest payment frequency			The Company may pay interest-only for the first seven years of the term and principal payments are due in four equal installments during the eighth year of the term
Percentage payment up on repayment of principal amount			2.00%
Long term liability			$ 1,100,000
Interest expense			$ 4,000,000	4,100,000	$ 1,900,000
Total incurred and recorded repayment				1,400,000
Loss on extinguishment of debt				$ 600,000
Term Loan Agreement [Member] | Scenario, Forecast [Member]
Line of Credit Facility [Line Items]
Credit facility, additional borrowing capacity							$ 15,000,000	$ 5,000,000
Term Loan Agreement [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Percentage of accrue interest	12.50%
Term Loan Agreement [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Percentage of accrue interest	12.00%
Percentage of redemption fee			1.00%