Stockholders' Equity and Equity Compensation - Summary of Deferred Stock Unit Activity (Details)	3 Months Ended
	Mar. 31, 2017 $ / shares shares
Deferred Stock Units
Outstanding, beginning balance (in shares) | shares	1,501,021
Outstanding, ending balance (in shares) | shares	1,630,414
Weighted Average Award Date Fair Value
Outstanding, beginning balance (in dollars per share) | $ / shares	$ 18.78
Outstanding, ending balance (in dollars per share) | $ / shares	$ 19.31
Deferred Stock Units
Deferred Stock Units
Outstanding, beginning balance (in shares) | shares	253,445
Awarded (in shares) | shares	3,026
Distributed (in shares) | shares	0
Outstanding, ending balance (in shares) | shares	256,471
Weighted Average Award Date Fair Value
Outstanding, beginning balance (in dollars per share) | $ / shares	$ 19.93
Awarded (in dollars per share) | $ / shares	24.06
Distributed (in dollars per share) | $ / shares	0.00
Outstanding, ending balance (in dollars per share) | $ / shares	$ 19.98