Fair Value (Tables)

3 Months Ended

Mar. 31, 2013

Fair Value [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

	March 31, 2013		Level 1		Level 2		Level 3
Available-for-sale securities	$	59,394	$	59,394	$	-	$	-
Trading securities		38,932		38,932		-		-
Total assets	$	98,326	$	98,326	$	-	$	-
Fair value of interest rate swap agreements	$	156,920	$	-	$	156,920	$	-
Total liabilities	$	156,920	$	-	$	156,920	$	-
	December 31, 2012		Level 1		Level 2		Level 3
Available-for-sale securities	$	56,376	$	56,376	$	-	$	-
Trading securities		34,696		34,696		-		-
Total assets	$	91,072	$	91,072	$	-	$	-
Fair value of interest rate swap agreements	$	181,600	$	-	$	181,600	$	-
Total liabilities	$	181,600	$	-	$	181,600	$	-