Stockholders' Equity - Summary of Repurchases During the Period (Details) - USD ($)							1 Months Ended																																	3 Months Ended	12 Months Ended
	Jan. 01, 2016	Jun. 30, 2015	Jan. 01, 2015	Jun. 13, 2014	Jan. 20, 2014	Jan. 01, 2014	Dec. 31, 2016	Nov. 30, 2016	Oct. 31, 2016	Sep. 30, 2016	Aug. 31, 2016	Jul. 31, 2016	Jun. 30, 2016	May 31, 2016	Apr. 30, 2016	Mar. 31, 2016	Feb. 29, 2016	Jan. 31, 2016	Dec. 31, 2015	Nov. 30, 2015	Oct. 31, 2015	Sep. 30, 2015	Aug. 31, 2015	Jul. 31, 2015	Jun. 30, 2015	May 31, 2015	Apr. 30, 2015	Mar. 31, 2015	Feb. 28, 2015	Jan. 31, 2015	Dec. 31, 2014	Nov. 30, 2014	Oct. 31, 2014	Jun. 30, 2014	May 31, 2014	Apr. 30, 2014	Mar. 31, 2014	Feb. 28, 2014	Jan. 30, 2014	Sep. 30, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Jun. 29, 2015
Equity [Abstract]
Total Number of Shares Purchased	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	118,746	199,391	211,040	129,849	0	0	160,000	200,000	203,820	100,000	0	0	84,634	30,000	0	51,760	139,568	185,000	40,000	0	0	0	0	1,322,846	530,962
Average Price Paid per Share (in dollars per share)	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 22	$ 22	$ 23	$ 23	$ 0	$ 0	$ 25	$ 26	$ 31	$ 32	$ 0	$ 0	$ 34	$ 35	$ 0	$ 35	$ 35	$ 35	$ 35	$ 0	$ 0	$ 0	$ 0	$ 25	$ 35
Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	118,746	199,391	211,040	129,849	0	0	160,000	200,000	203,820	100,000	0	0	84,634	30,000	0	51,760	139,568	185,000	40,000	0	0	0	0	1,322,846	530,962
Maximum Number of Shares that May Yet Be Purchased Under the Plans or Programs	0	0	0	0	147,284	0	336,434,000	336,434,000	336,434,000	336,125,000	336,125,000	336,125,000	330,816,000	316,935,000	316,935,000	315,231,000	315,231,000	315,231,000	0	0	0	0	0	0	0	0	0	66,910	116,910	116,910	0	84,634	114,634	0	0	14,784	107,284	147,284	147,284	0	336,434,000	0	0	0
Maximum Number (or Approximate Dollar Value) of Shares that May Yet Be Purchased Under the Plans or Programs	$ 148,008	$ 15,114,029	$ 15,027,043	$ 15,027,043	$ 9,417,721	$ 9,417,721	$ 148,008	$ 148,008	$ 148,008	$ 148,008	$ 148,008	$ 148,008	$ 148,008	$ 148,008	$ 148,008	$ 148,008	$ 148,008	$ 148,008	$ 148,008	$ 2,806,575	$ 7,214,395	$ 12,107,835	$ 15,114,029	$ 15,114,029	$ 15,114,029	$ 4,102,131	$ 9,220,841	$ 13,442,543	$ 15,027,043	$ 15,027,043	$ 15,027,043	$ 15,027,043	$ 15,027,043	$ 27,043	$ 1,836,055	$ 6,217,221	$ 9,417,721	$ 9,417,721	$ 9,417,721	$ 15,027,043	$ 148,008	$ 148,008	$ 15,027,043	$ 114,029