Net Income (Loss) Per Share (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended 0 Months Ended 1 Months Ended 9 Months Ended 0 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
May 22, 2013
Common Class A [Member]
Mar. 31, 2014
Common Class A [Member]
Sep. 30, 2014
Common Class A [Member]
votes
Sep. 30, 2014
Common Class B [Member]
votes
May 22, 2013
Preferred Stock [Member]
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]                  
New share issues         6,230,000 4,000,000      
Shares Sold in Public Offering, Existing Shares, Number of Shares Sold         3,200,000        
Number of shares converted by existing shareholders                 2,000,000
Votes per share entitled to share holder             1 10  
Net income (loss) $ (4,631) $ 2,441 $ (14,834) $ (4,169)          
Weighted average shares used to compute basic net income (loss) per share 68,966,000 59,143,000 66,923,000 47,093,000          
Net income (loss) per share attributable to common stockholders - basic and diluted (in usd per share) $ (0.07) $ 0.04 $ (0.22) $ (0.09)          
Net income (loss) $ (4,631) $ 2,441 $ (14,834) $ (4,169)          
Stock awards 0 12,205,000 0 0          
Diluted (in shares) 68,966,000 71,348,000 66,923,000 47,093,000          
Diluted (in usd per share) $ (0.07) $ 0.03 $ (0.22) $ (0.09)