Long-Term Debt:

Long-term debt at June 30, 2017 and December 31, 2016 consisted of the following (in thousands):



	June 30,		December 31,
	2017		2016
1.875% Senior notes, net of unamortized discount and debt issuance costs of $4,278 at June 30, 2017 and $7,823 at December 31, 2016	$	441,151	$	719,617
3.00% Senior notes, net of unamortized discount and debt issuance costs of $1,286 at December 31, 2016	—		248,714
4.15% Senior notes, net of unamortized discount and debt issuance costs of $3,615 at June 30, 2017 and $3,859 at December 31, 2016	421,385		421,141
4.50% Senior notes, net of unamortized discount and debt issuance costs of $1,041 at June 30, 2017 and $2,380 at December 31, 2016	174,174		347,620
5.45% Senior notes, net of unamortized discount and debt issuance costs of $4,236 at June 30, 2017 and $4,313 at December 31, 2016	345,764		345,687
Commercial paper notes	307,000		247,503
Variable-rate foreign bank loans	38,742		38,939
Other	361		41
Total long-term debt	1,728,577		2,369,262
Less amounts due within one year	307,109		247,544
Long-term debt, less current portion	$	1,421,468	$	2,121,718

In the first quarter of 2017, using a portion of the proceeds from the sale of the Chemetall Surface Treatment business, we repaid the 3.00% Senior notes in full, €307.0 million of the 1.875% Senior notes and $174.7 million of the 4.50% Senior notes, as well as related tender premiums of $45.2 million. As a result, Interest and financing expenses on the consolidated statements of income (loss) includes a loss on early extinguishment of debt of $52.8 million for the six-month period ended June 30, 2017, representing the tender premiums, fees, unamortized discounts and unamortized deferred financings costs from the redemption of these senior notes.

Current portion of long-term debt at June 30, 2017 consisted primarily of commercial paper notes with a weighted-average interest rate of approximately 1.71% and a weighted-average maturity of 28 days.

The carrying value of our 1.875% Euro-denominated senior notes has been designated as an effective hedge of our net investment in certain foreign subsidiaries where the Euro serves as the functional currency, and gains or losses on the revaluation of these senior notes to our reporting currency are recorded in accumulated other comprehensive loss. During the three-month and six-month periods ended June 30, 2017, losses of $14.2 million and $27.9 million (net of income taxes), respectively, and during the three-month and six-month periods ended June 30, 2016, gains (losses) of $6.6 million and ($2.9) million (net of income taxes), respectively, were recorded in accumulated other comprehensive loss in connection with the revaluation of these senior notes to our reporting currency.