Other Assets - Summary of Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Other Assets [Abstract]
Debt issue costs, net	$ 7,628	$ 8,318
Equity investments	129,337	47,451
Other corporate assets	31,547	28,197
Prepaids and other assets	27,028	11,133
Total other assets	$ 195,540	$ 95,099