STOCKHOLDERS' EQUITY (Tables)

6 Months Ended

Jun. 30, 2016

The changes in stockholders’ equity for the six months ended June 30, 2016 were as follows:



									Accumulated
									Other			Total
	Common Stock					Retained			Comprehensive			Stockholders’
(in thousands, except share and per share data)	Shares		Amount			Earnings			Income (Loss)			Equity
BALANCE, DECEMBER 31, 2015	152,699,077		$	829,211		$	875,595		$	4,265		$	1,709,071
Net income	—		—			134,963			—			134,963
Repurchase and retirement of common stock	(191,215	)	(8,318		)	—			—			(8,318		)
Dividends declared ($0.375 per share)	—		—			(57,378		)	—			(57,378		)
Stock option exercises	378,250		9,278			—			—			9,278
Shares issued under the Employee Stock Purchase Plan	40,219		1,228			—			—			1,228
Issuance of restricted stock	460,739		—			—			—			—
Forfeiture of restricted stock	(17,037	)	—			—			—			—
Forfeiture of performance shares	(5,008	)	—			—			—			—
Share-based compensation, net of forfeitures	—		11,393			—			—			11,393
Other comprehensive loss, net of tax	—		—			—			(7,341		)	(7,341		)
Other	—		101			—			—			101
BALANCE, JUNE 30, 2016	153,365,025		$	842,893		$	953,180		$	(3,076	)	$	1,792,997

The changes in stockholders’ equity for the six months ended June 30, 2015 were as follows:



									Accumulated
									Other		Total
	Common Stock					Retained			Comprehensive		Stockholders’
(in thousands, except share and per share data)	Shares		Amount			Earnings			Income		Equity
BALANCE, DECEMBER 31, 2014	155,140,967		$	923,191		$	741,550		$	4,816	$	1,669,557
Net income	—		—			139,468			—		139,468
Repurchase and retirement of common stock	(664,719	)	(21,838		)	—			—		(21,838		)
Dividends declared ($0.325 per share)	—		—			(50,513		)	—		(50,513		)
Stock option exercises	1,068,085		9,608			—			—		9,608
Shares issued under the Employee Stock Purchase Plan	34,097		1,096			—			—		1,096
Issuance of restricted stock	243,493		—			—			—		—
Forfeiture of restricted stock	(44,034	)	—			—			—		—
Issuance of performance shares	287,464		—			—			—		—
Forfeiture of performance shares	(4,447	)	—			—			—		—
Share-based compensation, net of forfeitures	—		8,704			—			—		8,704
Other comprehensive income, net of tax	—		—			—			1,262		1,262
Other	—		46			—			—		46
BALANCE, JUNE 30, 2015	156,060,906		$	920,807		$	830,505		$	6,078	$	1,757,390

The following table provides the components of changes in AOCI for the three and six months ended June 30, 2016 and 2015:



	Three months ended						Six months ended
	June 30,						June 30,
(in thousands)	2016			2015			2016			2015
Balance at the beginning of period	$	2,103		$	4,195		$	4,265		$	4,816
Derivative instruments
Reclassification of net loss relating to interest rate cash flow hedges from AOCI to interest expense — net (net of tax of $100 and $86 for the three months ended June 30, 2016 and 2015, respectively, and net of tax of $192 and $161 for the six months ended June 30, 2016 and 2015, respectively)	111			125			230			261
(Loss) gain on interest rate swaps relating to interest rate cash flow hedges (net of tax of $3,944 and $1,333 for the three months ended June 30, 2016 and 2015, respectively, and net of tax of $5,767 and $719 for the six months ended June 30, 2016 and 2015, respectively)	(5,459		)	1,861			(8,001		)	998
Derivative instruments, net of tax	(5,348		)	1,986			(7,771		)	1,259
Available-for-sale securities
Unrealized net gain (loss) on available-for-sale securities (net of tax of $122 and $74 for the three months ended June 30, 2016 and 2015, respectively, and net of tax of $309 and $2 for the six months ended June 30, 2016 and 2015, respectively)	169			(103		)	430			3
Available-for-sale securities, net of tax	169			(103		)	430			3
Total other comprehensive (loss) income, net of tax	(5,179		)	1,883			(7,341		)	1,262
Balance at the end of period	$	(3,076	)	$	6,078		$	(3,076	)	$	6,078