Derivative instruments and hedging transactions (Tables)

12 Months Ended

Dec. 30, 2017

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance

The table below summarizes the effects of derivative instruments in the consolidated statements of operations and comprehensive income for fiscal year 2017:

Derivatives designated as cash flow hedging instruments	Amount of net gain (loss) reclassified into earnings			Consolidated statement of operations classification	Total effect on other comprehensive income (loss)
Interest rate swaps	$	1,922		Interest expense	(1,922	)
Income tax effect	(778		)	Provision (benefit) for income taxes	778
Net of income taxes	$	1,144			(1,144	)

The table below summarizes the effects of derivative instruments in the consolidated statements of operations and comprehensive income for fiscal year 2016:

Derivatives designated as cash flow hedging instruments	Amount of net gain (loss) reclassified into earnings			Consolidated statement of operations classification	Total effect on other comprehensive income (loss)
Interest rate swaps	$	2,181		Interest expense	(2,181	)
Income tax effect	(882		)	Provision (benefit) for income taxes	882
Net of income taxes	$	1,299			(1,299	)

The table below summarizes the effects of derivative instruments in the consolidated statements of operations and comprehensive income for fiscal year 2015:

Derivatives designated as cash flow hedging instruments	Amount of net gain (loss) reclassified into earnings			Consolidated statement of operations classification	Total effect on other comprehensive income (loss)
Interest rate swaps	$	2,140		Interest expense	(2,140	)
Income tax effect	(867		)	Provision (benefit) for income taxes	867
Net of income taxes	$	1,273			(1,273	)