e incurred restructuring charges related to the acquisition of the HIS business (see Note 2: Acquisitions, Strategic Transaction and Integration Expenses). The restructuring charges were incurred as a result of integrating the acquired operations into our business and include severance costs related to involuntary employee terminations and facility exit costs related to the closure of the Dominican Republic manufacturing facilities acquired from Pfizer. All material charges in regard to these restructuring activities have been paid as of December 31, 2017.

In 2016, we incurred an additional $0.8 million related to the closure of the Slovakian manufacturing facility, described below. Additionally, we incurred $0.2 million related to a one-time charge unrelated to the events disclosed in the table below.

In 2015, we incurred $6.7 million in total restructuring charges related to: (i) a commitment to a plan to sell our Slovakia manufacturing facility, which was sold during 2016. The plan to sell the facility resulted in a pre-tax restructuring charge of $4.2 million for employee termination benefits, government incentive repayments and other associated costs; (ii) an

agreement with Dr. Lopez, a member of our Board of Directors and a former employee in our research and development department, pursuant to which we bought out Dr. Lopez's right to employment under his then-existing employment agreement-the $1.9 million buy-out, including payroll taxes, will be paid in equal monthly installments until December 2020 and payments that will exceed one year have been accrued under long-term liabilities in our consolidated balance sheet; and (iii) the reorganization of our corporate infrastructure, resulting in one-time employee termination benefits and other associated costs and corporate restructuring actions resulted in a total charge of $0.6 million.

The following table summarizes the activity for the restructuring-related charges discussed above and related accrual (in thousands):



	Accrued Balance December 31, 2015		Charges incurred		Payments			Currency Translation		Other Adjustments			Accrued Balance December 31, 2016		Charges incurred		Payments			Other Adjustments			Accrued Balance December 31, 2017
Severance pay and benefits	$	2,505	$	25	$	(2,683	)	$	77	$	129		$	53	$	15,983	$	(15,104	)	$	(17	)	$	915
Government incentive repayment	1,884		—		(1,769		)	57		(172		)	—		—		—			—			—
Employment agreement buyout	1,845		—		(368		)	—		—			1,477		—		(363		)	—			1,114
Other corporate restructuring	305		168		(468		)	—		(5		)	—		—		—			—			—
Retention and facility closure expenses	—		581		(581		)	—		—			—		2,789		(2,789		)	—			—
	$	6,539	$	774	$	(5,869	)	$	134	$	(48	)	$	1,530	$	18,772	$	(18,256	)	$	(17	)	$	2,029