The following are selected disclosures from Cabelas (an outdoor adventure superstore):

PROPERTY AND EQUIPMENT (in thousands)
	Depreciable
	Life in Years	2013	2012
Land and improvements	Up to 20	$216,826	$185,916
Buildings and improvements	7 to 40	780,116	640,666
Furniture, fixtures and equipment	3 to 15	643,394	551,904
Assets held under capital lease	Up to 30	15,611	13,255
Property and equipment		1,655,947	1,391,741
Less accumulated depreciation and amortization		(550,101)	(473,847)
		1,105,846	917,894
Construction in progress		181,699	103,762
		$1,287,545	$1,021,656

Assuming that Cabelas uses straight-line depreciation, estimate the useful life of its depreciable PPE assets.