Equity (Details) - Common Stock - USD ($) shares in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2017	Jul. 31, 2015
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program, authorized amount			$ 25,000,000.0
Repurchase of common stock (in shares)	0.4
Stock repurchased during period, value	$ 5,400,000
Stock Repurchase Program, Remaining Authorized Repurchase Amount		$ 14,600,000