Preferred Noncontrolling Interests - Additional Information (Detail) - USD ($)	6 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2013	Dec. 31, 2015
Schedule Of Equity Method Investments [Line Items]
Common stock, shares issued	18,078,337		17,303,180
Common stock value	$ 1,807		$ 1,730
Amount of unreturned capital contribution and undistributed preferred distributions	$ 10,000
Conversion price per share	$ 20.00
Common Stock
Schedule Of Equity Method Investments [Line Items]
Total consideration		$ 435,000
Number of shares sold		87,000
Foundation Health Enterprises LLC
Schedule Of Equity Method Investments [Line Items]
Offering cost		$ 100,000
Common stock, shares issued		1,000
Common stock value		$ 5,000
Total consideration		8,700,000
Cumulative preferred annual return	9.00%
Foundation Health Enterprises LLC | Class B member interests
Schedule Of Equity Method Investments [Line Items]
Offering cost		$ 105,000
Number offering units		87
Foundation Health Enterprises LLC | Private placement
Schedule Of Equity Method Investments [Line Items]
Offering cost		$ 9,135,000