EQUITY

During the three months ended March 31, 2018, we repurchased 30,298 of our common shares for $3.3 million. These included rights to 10,298 shares valued at $1.1 million that were surrendered to us pursuant to the terms of a stock-based compensation plan in consideration of the participants' tax burdens that may result from the issuance of common shares under that plan. Such common shares, unless canceled, may be reissued for a variety of purposes such as future acquisitions, non-employee director stock awards or employee stock awards. We distributed 35,686 treasury shares upon vesting of stock-based awards during the three months ended March 31, 2018.

In February 2018, we paid a quarterly dividend of $0.55 per share of common stock. In addition, on April 17, 2018, we declared a quarterly dividend of $0.55 per share of common stock for shareholders of record on April 27, 2018 and payable on May 22, 2018.

The following table summarizes our changes in equity for the three months ended March 31, 2018 (in thousands):



	Common Shares		Additional Paid-In Capital		Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Treasury Stock			Non-Controlling Interest		Total Equity
December 31, 2017	$	1,148	$	54,463	$	173,855		$	(8,353	)	$	(76,269	)	$	3,888	$	148,732
Stock based-awards	—		1,207		—			—			5,084			—		6,291
Repurchase of common shares	—		—		—			—			(3,310		)	—		(3,310		)
Dividends paid	—		—		(24,322		)	—			—			—		(24,322		)
Amortization of deferred pension costs, net of tax	—		—		—			48			—			—		48
Interest rate swaps, net of tax	—		—		—			560			—			—		560
Net income	—		—		23,527			—			—			50		23,577

March 31, 2018	$	1,148	$	55,670	$	173,060		$	(7,745	)	$	(74,495	)	$	3,938	$	151,576

Accumulated other comprehensive income (loss) consisted of the following (in thousands):



	March 31, 2018			December 31, 2017
Prior service cost	$	525		$	541
Unrecognized net actuarial loss	(8,639		)	(8,703		)
Fair value of derivatives, net of tax	369			(191		)
Total accumulated other comprehensive income (loss)	$	(7,745	)	$	(8,353	)