Stockholders' Equity - Additional Information (Details) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended
	Jan. 31, 2017 USD ($) $ / shares shares	Mar. 31, 2017 USD ($) Vote	Mar. 31, 2016 USD ($)
Stockholders’ Equity
Common stock, shares issued | shares	5,750,000
Sale of stock, price per share | $ / shares	$ 41.00
Proceeds from the sale of common stock, net of issuance costs | $	$ 221,200	$ 221,224	$ 0
Number Of Vote Per Common Stock | Vote		1