Note 17. Short-Term Borrowings


		December 31,		December 31,
		2018		2019
	(in thousands)
Unsecured borrowings	$	20,000		57,339
Secured borrowings	$	164,000		164,000
Unused credit lines	$	247,295		242,476

Interest rate-unsecured borrowings		2.96	%	1.04403%~2.96453	%
Interest rate-secured borrowings		0.35%~0.78	%	0.35%~0.78	%

As of December 31, 2018 and 2019, cash and time deposits totaling $164,000 thousand and $164,000 thousand are pledged as collateral, respectively.

As of December 31, 2019, unused credit lines will expire between January 2020 and November 2020. Among the unused credit lines, $24,001 thousand will expire before the end of March 2020, and $136,000 thousand belonging to the parent company needs to be secured with equal amount of cash and time deposits when borrowing money from banks.

The reconciliation of borrowings to cash flows arising from financing activities was as follows:


	Unsecured		Secured
	borrowings		borrowings
	(in thousands)
January 1, 2018	$	-	147,000
Change from financing cash flows:
Proceeds from borrowings		40,000	91,000
Repayment from borrowings		(20,000)	(74,000)
Total Change from financing cash flows		20,000	17,000
December 31,2018		20,000	164,000
Change from financing cash flows:
Proceeds from borrowings		244,224	158,000
Repayment from borrowings		(207,006)	(158,000)
Total Change from financing cash flows		37,218	-
Other Changes:
Effect of exchange rate changes		121	-
Total liability-related other changes		121	-

December 31,2019	$	57,339	164,000