Stockholders' Equity - Summary of Repurchases During the Period (Details) - USD ($)		1 Months Ended												12 Months Ended
	Jan. 01, 2019	Dec. 31, 2019	Nov. 30, 2019	Oct. 31, 2019	Sep. 30, 2019	Aug. 31, 2019	Jul. 31, 2019	Jun. 30, 2019	May 31, 2019	Apr. 30, 2019	Mar. 31, 2019	Feb. 28, 2019	Jan. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 09, 2019	May 02, 2019
Equity [Abstract]
Total Number of Shares Purchased	0	110,000	110,374	229,849	199,921	220,000	218,699	197,488	129,973	0	0	0	0	1,416,304	0	0
Average Price Paid per Share (in dollars per share)	$ 0.00	$ 27.23	$ 23.21	$ 22.34	$ 24.12	$ 28.16	$ 30.79	$ 29.03	$ 29.38	$ 0.00	$ 0.00	$ 0.00	$ 0.00	$ 26.83
Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	0	110,000	110,374	229,849	199,921	220,000	218,699	197,488	129,973	0	0	0	0	1,416,304
Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs	0	352,000	352,000	352,000	352,000	299,000	299,000	299,000	299,000	284,000	284,000	284,000	284,000	352,000
Maximum Number (or Approximate Dollar Value) of Shares that May Yet Be Purchased Under the Plans or Programs	$ 148,008	$ 22,004,700	$ 673	$ 2,562,453	$ 7,697,280	$ 12,519,374	$ 18,714,574	$ 25,448,317	$ 31,181,393	$ 148,008	$ 148,008	$ 148,008	$ 148,008	$ 22,004,700
Stock repurchase program																	$ 25,000,000.0	$ 35,000,000.0
Deemed repurchased (in shares)		83,214												83,214