Employee and Consultant Equity-Based Compensation - 2004 Omnibus Stock Option Plan (Details) - shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Jul. 31, 2012	Dec. 31, 2014	Dec. 31, 2004
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise of options (shares)	158,743	124,884
Outstanding (shares)	6,857,124	6,167,170		5,628,726
2004 Omnibus Stock Option Plan | Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized (shares)			5,500,000		500,000
Additional shares authorized (shares)			5,000,000
Exercise of options (shares)	428,907
Outstanding (shares)	3,511,093
Options available (shares)	0