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Shareholders' Equity (Tables)
 3 Months Ended
Mar. 31, 2018
Equity [Abstract]  
Schedule of Stockholders Equity
The following tables summarize the components of our shareholders’ equity and the changes therein as of and for the three months ended March 31, 2018:
 
December 31,
 
 
 
All Other
 
March 31,
 
2017
 
Net Income
 
Changes 1
 
2018
Common stock
$
150

 
$
—

 
$
1

 
$
151

Paid-in capital
194,123

 
—

 
988

 
195,111

Retained earnings
27,366

 
10,295

 
(2,659
)
 
35,002

Accumulated other comprehensive income
—

 
—

 
—

 
—

 
$
221,639

 
$
10,295

 
$
(1,670
)
 
$
230,264

_______________________
1 Includes equity-classified share-based compensation of $1.6 million during the three months ended March 31, 2018. During the three months ended March 31, 2018, 37,845 and 1,495 shares of common stock were issued in connection with the vesting of certain time-vested restricted stock units (“RSUs”) and performance restricted stock units (“PRSUs”), net of shares withheld for income taxes, respectively. Also includes a write-off of $2.7 million for certain accounts receivable attributable to natural gas imbalances accounted for under the entitlements method prior to January 1, 2018 in accordance with the adoption of ASC Topic 606 (see Note 5).