Shareholders' Equity - Additional Information (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Mar. 11, 2016
Stockholders Equity [Line Items]
Capital conservation buffer rate	0.625%
Capital requirements phase-in period	1 year
Dividends on common stock [Abstract]
Dividend potential for next fiscal year	$ 98,300
Period for which retained net income considered for approval	2 years
Stock Repurchase Program
Dividends on common stock [Abstract]
Amount of stock authorized for repurchase		$ 100,000
Repurchase shares of common stock	34
Repurchase shares of common stock, value	$ 750