Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity Rollforward (Details)

v3.7.0.1
Shareholders' Equity Rollforward (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2017
USD ($)
Increase (Decrease) in Stockholders' Equity [Roll Forward]  
As of beginning balance $ 185,548
Net income (loss) 49,410
All Other Changes 1,738
As of ending balance 236,696
Share-based compensation 1,700
Proceeds Attributable to Rights Offering 100
Common stock  
Increase (Decrease) in Stockholders' Equity [Roll Forward]  
As of beginning balance 150
As of ending balance 150
Paid-in capital  
Increase (Decrease) in Stockholders' Equity [Roll Forward]  
As of beginning balance 190,621
All Other Changes 1,738 [1]
As of ending balance 192,359
Retained earnings (accumulated deficit)  
Increase (Decrease) in Stockholders' Equity [Roll Forward]  
As of beginning balance (5,296)
Net income (loss) 49,410
As of ending balance 44,114
Accumulated other comprehensive income  
Increase (Decrease) in Stockholders' Equity [Roll Forward]  
As of beginning balance 73
As of ending balance $ 73
[1] Includes equity-classified share-based compensation of $1.7 million and $0.1 million from the receipt in May 2017 of proceeds attributable to the rights offering in 2016 that had been held in escrow, net of costs to register our common stock