Common Stock Placements (Details) - Common Stock $ / shares in Units, $ in Thousands	1 Months Ended	12 Months Ended
	Dec. 31, 2013 USD ($) $ / shares shares	Dec. 31, 2013 $ / shares shares
Sale of stocks and warrants [Line Items]
Shares issued (in shares) | shares	5,750,000	5,750,000
Share issue price (in dollars per share) | $ / shares	$ 6.80	$ 6.80
Proceeds from shares issued	$ 36,704
Legal fees paid for secondary offering	$ 194