15.

Leases

The majority of the Company’s facilities are leased under non-cancelable operating leases ranging in terms from five to fifteen years and which contain renewal options of five to ten years at the fair rental value at the time of renewal. The Company’s leases are generally subject to periodic consumer price index increases or contain fixed escalation clauses. The Company also leases certain facilities and equipment under capital leases.

Future minimum lease payments under non-cancelable operating and capital leases are as follows:

	Operating leases		Capital leases
2017	$	473,302	$	37,758
2018		442,959		34,442
2019		401,242		35,292
2020		354,559		35,575
2021		310,704		31,133
Thereafter		1,244,309		232,191
	$	3,227,075		406,391
Less portion representing interest				(106,709	)
Total capital lease obligations, including current portion			$	299,682

Rent expense under all operating leases for 2016, 2015, and 2014 was $563,204, $514,287 and $460,093, respectively. Rent expense is recorded on a straight-line basis over the term of the lease for leases that contain fixed escalation clauses or include abatement provisions. Leasehold improvement incentives are deferred and amortized to rent expense over the term of the lease. The net book value of property and equipment under capital leases was $263,995 and $261,960 at December 31, 2016 and 2015, respectively. Capital lease obligations are included in long-term debt. See Note 14 to these consolidated financial statements.