Consolidated Statements of Stockholders' Equity (Parenthetical) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) shares
Stock Redeemed or Called During Period, Shares | shares	2,031,383
Stock Redeemed or Called During Period, Value | $	$ 21,594
Dividends Payable, Nature	one share of common stock for every 1.06 shares of common stock