Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2016	Dec. 31, 2015
Summary Of Significant Accounting Policies [Line Items]
Adjustments for cost report settlements	$ 2,300,000
Minimum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	2 years
Maximum
Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives	20 years
Cash
Summary Of Significant Accounting Policies [Line Items]
Restricted cash	$ 100,000	$ 200,000
Prepaid and Other Current Assets
Summary Of Significant Accounting Policies [Line Items]
Cost settlements adjustment amount	2,800,000	$ 500,000
Net Income Loss
Summary Of Significant Accounting Policies [Line Items]
Prior period reclassification adjustment	0
New Accounting Pronouncement | Other Assets
Summary Of Significant Accounting Policies [Line Items]
Prior period reclassification adjustment	$ 580,000