The following is a summary of our interest costs for the three and nine month periods ended September 30, 2014 and 2013 (in thousands):


	For the Three Months Ended September 30,				For the Nine Months Ended September 30,
	2014		2013		2014		2013
Interest expense	$	7,527	$	6,668	$	20,459	$	16,805
Amortization of deferred financing costs		755		822		2,452		1,993
Non lender fees ⁽¹⁾		1,088		—		1,088		2,982

Interest costs charged to expense	$	9,370	$	7,490	$	23,999	$	21,780
Interest costs capitalized to property and equipment		97		233		501		635
Interest costs capitalized to software		350		193		973		402

Total interest costs	$	9,817	$	7,916	$	25,473	$	22,817

(1)

Primarily consists of fees paid to legal counsel and underwriters in connection with the amendments to the Amended and Restated Senior Term Facility.