Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Restricted Stock Award Activity (Details)

v3.19.2
Stock-Based Compensation - Restricted Stock Award Activity (Details) - Restricted shares of common stock
6 Months Ended
Jun. 30, 2019
$ / shares
shares
Number of Shares (in shares):  
Non-vested, beginning balance (in shares) | shares 29,000
Vested (in shares) | shares (9,000)
Cancelled (in shares) | shares (1,000)
Non-vested, ending balance (in shares) | shares 19,000
Weighted-Average Grant Date Fair Value (in dollars per share):  
Non-vested, beginning balance (usd per share) | $ / shares $ 3.43
Vested (usd per share) | $ / shares 4.15
Cancelled (usd per share) | $ / shares 6.30
Non-vested, ending balance (usd per share) | $ / shares $ 2.94