During the three months ended June 30, 2015, we repurchased 359,732 of our common shares for $42.9 million. Included in this total were rights to 11,829 shares valued at $1.3 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. During the six months ended June 30, 2015, we repurchased 1,043,022 of our common shares for $115.8 million. Included in this total were rights to 18,478 shares valued at $2.0 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. During the three and six months ended June 30, 2015, 40,128 and 62,774, respectively, treasury shares were distributed upon vesting of stock-based awards.

At the annual meeting of shareholders on May 21, 2015, our shareholders approved the cancellation of 1,250,000 shares of our common stock then held as treasury stock. These treasury shares will be cancelled after the expiration of the waiting period required under Dutch law. In accordance with ASC 505-30-30-8, we will charge the excess of the cost of the treasury stock over its par value to additional paid-in capital and retained earnings.

In February and May 2015, we paid a quarterly dividend of $0.55 per share of common stock. In addition, on July 7, 2015, we declared a quarterly dividend of $0.55 per share of common stock for shareholders of record on July 17, 2015 and payable on August 17, 2015.

The following table summarizes our changes in equity for the six months ended June 30, 2015 (in thousands):



	Common Shares		Additional Paid-In Capital			Retained Earnings			Accumulated Other Comprehensive Income (Loss)			Treasury Stock			Non-Controlling Interest			Total Equity
December 31, 2014	$	1,174	$	—		$	415,906		$	(11,894	)	$	(317,613	)	$	6,420		$	93,993
Stock based-awards	—		315			(1,611		)	—			11,773			—			10,477
Tax benefit of stock-based awards issued	—		(315		)	—			—			—			—			(315		)
Repurchase of common shares	—		—			—			—			(115,793		)	—			(115,793		)
Dividends paid	—		—			(47,508		)	—			—			—			(47,508		)
Amortization of deferred pension costs, net of tax	—		—			—			212			—			—			212
Interest rate swaps	—		—			—			450			—			—			450
Net income (loss)	—		—			66,025			—			—			(281		)	65,744

June 30, 2015	$	1,174	$	—		$	432,812		$	(11,232	)	$	(421,633	)	$	6,139		$	7,260

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



	June 30, 2015			December 31, 2014
Transition asset	$	33		$	65
Prior service cost	689			718
Unrecognized net actuarial loss	(11,322		)	(11,595		)
Fair value of derivatives, net of tax	(632		)	(1,082		)
Total accumulated other comprehensive income (loss)	$	(11,232	)	$	(11,894	)