Stockholders' Equity (Details) $ in Millions		6 Months Ended
	Jul. 22, 2016	Jun. 30, 2016 USD ($) shares	Jul. 21, 2016 shares	May 25, 2016 shares	Feb. 12, 2016 shares	Feb. 11, 2016 shares	Jan. 12, 2016 shares	Dec. 31, 2015 shares
Class of Stock
Authorized shares			20,000,000	20,000,000	100,000,000	24,000,000
Common stock, shares authorized		99,900,000	19,900,000				99,900,000	24,000,000
Preferred stock, shares authorized		100,000	100,000				100,000	100,000
Fair value of warrants exercised as an adjustment to additional paid-in capital | $		$ 1.1
Stock-based compensation expense as an adjustment to additional paid-in capital | $		$ 0.6
Common Stock
Class of Stock
Reverse stock split ratio	0.20