	June 30,
	2016		2015
Deferred rent, net of current portion	$	32,907	$	28,038
Interest rate swap agreements		21,609		11,728
Deferred acquisition and contingent consideration		18,642		—
Deferred revenue		7,234		7,784
Accrued post-retirement obligations		6,569		6,103
Reserve for unrecognized tax benefits		249		5,880
Other		110		848
Total other long-term liabilities	$	87,320	$	60,381

Deferred rent liabilities result from recording rent expense and incentives for tenant improvements on a straight-line basis over the life of the respective lease.

Accrued post-retirement obligations include projected liabilities for benefits the Company is obligated to provide under long-term care, group health, and executive life insurance plans, each of which is unfunded. Plan benefits are provided to certain current and former executives, their dependents and other eligible employees, as defined. Post-retirement obligations also include accrued benefits under supplemental retirement benefit plans covering certain executives. The expense recorded under these plans was $0.4 million during the year ended June 30, 2016 and $0.3 million during the year ended June 30, 2015, respectively.

The Company has entered into floating-to-fixed interest rate swap agreements related to a portion of the Company’s floating rate indebtedness (see Note 13). The fair value of the swap agreements as of June 30, 2016 and 2015 is a liability of approximately $21.6 million and $11.7 million, respectively.