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STOCKHOLDERS' EQUITY (Tables)
 3 Months Ended
Mar. 31, 2017
Equity [Abstract]  
Summary of Stock Option Activity
A summary of stock option activity follows:
 
Stock Options (1)
 
Weighted Average Exercise Price
 
Weighted Average Remaining Contractual Term (years)
 
Aggregate Intrinsic Value
Outstanding, December 31, 2016
1,115

 
$
6.13

 
 
 
 
Granted
—

 
$
—

 
 
 
 
Exercised
(33
)
 
$
11.01

 
 
 
 
Forfeited
(2
)
 
$
4.06

 
 
 
 
Outstanding, March 31, 2017
1,080

 
$
5.98

 
5.7
 
$
8,787

Exercisable, March 31, 2017
747

 
$
5.51

 
4.5
 
$
6,431

Unvested, March 31, 2017
373

 
$
7.62

 
8.4
 
$
2,421

(1)
Market-based performance stock options are included at the 100% attainment level. Attainment of the maximum performance targets and market achievements would result in the issuance of an additional 40 shares of Class A common stock currently included in unvested.
Summary of Restricted Stock, Restricted Stock Unit and Performance-based Stock Unit Activity
A summary of restricted stock, restricted stock unit and performance stock unit activity follows:
 
Restricted Stock, Restricted Stock Units, and Performance Stock Units (1)
 
Weighted Average Exercise Price
 
Weighted Average Remaining Contractual Term (years)
 
Aggregate Intrinsic Value
Outstanding, December 31, 2016
1,099

 
$
7.03

 
 
 
 
Granted
407

 
$
12.13

 
 
 
 
Class A Common Stock Vested
(288
)
 
$
5.01

 
 
 
 
Forfeited
(17
)
 
$
5.94

 
 
 
 
Outstanding, March 31, 2017
1,201

 
$
9.20

 
1.9
 
$
5,936

Unvested, March 31, 2017
1,563

 
$
9.97

 
2.0
 
$
6,539

(1)
Market-based performance stock unit grants are included at the 100% attainment level. Attainment of the maximum performance targets and market achievements would result in the issuance of an additional 362 shares of Class A common stock currently included in unvested.
Summary of Changes in Balances of Each Component of Accumulated Other Comprehensive Loss
A summary of the changes in the balances of each component of accumulated other comprehensive loss, net of tax follows:
 
 
 
 
 
Marketable
Securities
 
Interest Rate Swaps
Balance, December 31, 2016
$
(68
)
 
$
—

Other comprehensive income (loss) before reclassifications
23

 
(110
)
Amounts reclassified from accumulated other comprehensive income (loss)
—

 
69

Net current-period other comprehensive income (loss)
23

 
(41
)
Balance, March 31, 2017
$
(45
)
 
$
(41
)
Summary of Reclassifications Out of Accumulated Other Comprehensive Loss
A summary of reclassifications out of accumulated other comprehensive loss, net of tax follows:
 
 
Three Months Ended
March 31,
 
 
 
 
2017
 
2016
 
 
Details About Accumulated Other Comprehensive Loss Components
 
Amounts Reclassified Out of Accumulated Other Comprehensive Loss
 
Affected Line Item in the Consolidated
Statements of Operations
Interest rate swaps
 
69

 
—

 
Interest expense
 
 
69

 
—

 
Loss before income taxes
 
 
—

 
—

 
Provision (benefit) for income taxes
 
 
$
69

 
$
—

 
Net loss