Significant Events and Transactions of the Period (Tables)

6 Months Ended

Jun. 30, 2020

Restructuring and Related Activities [Abstract]

Balance of Treasury Shares

As of June 30, 2020, we had 5.6 million treasury shares remaining which may be used to satisfy the Company's obligations under its employee equity plans upon RSU vestings in lieu of issuing new shares, and for M&A activity.

	Number of Treasury Shares	Amount (in thousands of dollars)
Balance at January 1, 2020	3,903,673	$	74,900
Treasury Shares Repurchased for RSU Vesting	2,525,492	33,100
Treasury Shares Issued for RSU Vesting	(839,757)	(17,286)
Balance at June 30, 2020	5,589,408	$	90,714

Schedule of Restructuring Reserve by Type of Cost

The following table summarizes restructuring activities as of June 30, 2020 included in other current liabilities on the balance sheet:

	Six Months Ended
	June 30, 2020
	(in thousands)
Restructuring liability - January 1, 2020	$	5,581
Restructuring costs	497
Restructuring costs - non cash items	—
Amount paid	(5,030)
Restructuring liability - June 30, 2020	1,048

The following table summarizes restructuring activities as of June 30, 2020 included in other current liabilities on the balance sheet:

	Six Months Ended
	June 30, 2020
	(in thousands)
Restructuring liability - January 1, 2020	$	510
Restructuring costs	1,133
Amount paid	(1,529)
Restructuring liability - June 30, 2020	114