Investments (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value Disclosures [Abstract]

Investments from Continuing Operations

Investments of our continuing operations consist of the following as of December 31, 2016 and 2015 (dollars in thousands):

	December 31, 2016
			Gross Unrealized
	Cost		Gain		(Loss)			Fair Value
Short-term investments (available for sale):
Municipal bonds	$	4,050	$	-	$	-		$	4,050
Non-governmental debt securities		107,305		22		(113	)		107,214
Treasury and federal agencies		36,480		10		(73	)		36,417
Total short-term investments		147,835		32		(186	)		147,681
Restricted short-term investments (available for sale):
Non-governmental debt securities		8,597		-		-			8,597
Total investments (available for sale)	$	156,432	$	32	$	(186	)	$	156,278

	December 31, 2015
			Gross Unrealized
	Cost		Gain		(Loss)			Fair Value
Short-term investments (available for sale):
Municipal bonds	$	1,500	$	-	$	(11	)	$	1,489
Non-governmental debt securities		76,999		-		(242	)		76,757
Treasury and federal agencies		36,779		3		(127	)		36,655
Total short-term investments		115,278		3		(380	)		114,901
Long-term investments (available for sale):
Municipal bond		7,850		-		(476	)		7,374
Total investments (available for sale)	$	123,128	$	3	$	(856	)	$	122,275

Schedule of Available-for-Sale Investments

A schedule of available-for-sale investments segregated by their original stated terms to maturity as of December 31, 2016 and 2015 are as follows (dollars in thousands): 

	Less than one year		One to five years		Five to ten years		Greater than ten years		Total
Original stated term to maturity of available-for-sale-    investments as of December 31, 2016	$	113,040	$	39,459	$	800	$	2,979	$	156,278
Original stated term to maturity of available-for-sale-    investments as of December 31, 2015	$	71,000	$	43,552	$	-	$	7,723	$	122,275

Investments Measured at Fair Value on Recurring Basis

Investments measured at fair value on a recurring basis subject to the disclosure requirements of FASB ASC Topic 820 – Fair Value Measurements at December 31, 2016 and 2015 were as follows (dollars in thousands):

	As of December 31, 2016
	Level 1		Level 2		Level 3		Total
Municipal bonds	$	-	$	4,050	$	-	$	4,050
Non-governmental debt securities		33,597		82,214		-		115,811
Treasury and federal agencies		-		36,417		-		36,417
Totals	$	33,597	$	122,681	$	-	$	156,278

	As of December 31, 2015
	Level 1		Level 2		Level 3		Total
Municipal bonds	$	-	$	1,489	$	7,374	$	8,863
Non-governmental debt securities		-		76,757		-		76,757
Treasury and federal agencies		-		36,655		-		36,655
Totals	$	-	$	114,901	$	7,374	$	122,275

Schedule of Maintenance Fee Payment to CCKF

We make periodic operating maintenance payments related to proprietary rights that we use in our intellipath^TM adaptive learning technology. The total fees paid to CCKF for the years ended December 31, 2016, 2015 and 2014 were as follows (dollars in thousands):

	Maintenance Fee Payments
For the year ended December 31, 2016	$	1,375
For the year ended December 31, 2015	$	1,390
For the year ended December 31, 2014 (1)	$	1,972

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(1) Maintenance fee payments through October 2014 were incurred prior to an increase in ownership for CCKF. Through October 2014, CCKF was accounted for as a cost method investment.