4.	OTHER COMPREHENSIVE (LOSS) INCOME

Other comprehensive (loss) income consists of the foreign currency translation adjustment associated with our Canadian operations’ use of the Canadian dollar as its functional currency and changes in the unrealized gains (losses) on cash flow hedging instruments and available-for-sale securities. The tax effects allocated to each component of other comprehensive (loss) income were as follows:


*Quarters Ended March 31,*	2018			2017
Foreign currency translation adjustment	$	(6,645	)	$	2,155
Unrealized gain (loss) on cash flow hedging instruments		207			(423	)
Income tax (expense) benefit		(56	)		114

Unrealized gain (loss) on cash flow hedging instruments, net of tax		151			(309	)

Reclassification of loss (gain) on cash flow hedging instruments into earnings		1,031			(243	)
Income tax (benefit) expense		(278	)		65

Reclassification of loss (gain) on cash flow hedging instruments into earnings, net of tax		753			(178	)

Unrealized gain on available-for-sale securities		—			13
Income tax expense		—			(5	)

Unrealized gain on available-for-sale securities, net of tax		—			8

Other comprehensive (loss) income	$	(5,741	)	$	1,676

The changes in each component of accumulated other comprehensive loss, net of tax, were as follows:


*Quarters Ended March 31,*	2018			2017
Foreign currency translation adjustment:
Beginning balance	$	(33,499	)	$	(43,459	)
Current period other comprehensive (loss) income		(4,191	)		1,324

Ending balance		(37,690	)		(42,135	)

Cash flow hedging instruments:
Beginning balance		(421	)		215
Current period other comprehensive gain (loss)		91			(185	)
Less reclassification adjustment		451			(107	)

Ending balance		121			(77	)

Available-for-sale securities:
Beginning balance		(301	)		(286	)
Cumulative-effect adjustment to retained earnings		301			—
Current period other comprehensive income		—			8

Ending balance		—			(278	)

Accumulated other comprehensive loss, net of tax	$	(37,569	)	$	(42,490	)