Investment Securities:

6 Months Ended

Jun. 30, 2014

Investments, Debt and Equity Securities [Abstract]

Investment [Text Block]

Investment Securities

Our investment securities consist of certificates of deposit, corporate bonds, commercial paper and federal tax-exempt state and municipal government debt. All investment securities are considered available-for-sale and are “investment grade”, carried at fair value, and there have been no gains or losses on their disposal. Unrealized gains and losses on available-for-sale securities, net of tax, are included in accumulated other comprehensive loss in the stockholders' equity section of our consolidated balance sheets. We had no gross unrealized gains or losses on available-for-sale securities at June 30, 2014 or December 31, 2013. The scheduled maturities of the debt securities are between 2014 and 2045 and are all callable within one year. The investment securities consist of the following at June 30, 2014 and December 31, 2013:

	June 30, 2014		December 31, 2013
Federal tax-exempt debt securities	$	18,524	$	21,968
Corporate bonds	51,584		45,696
Commercial paper	4,228		—
Certificates of deposit	5,560		3,205
	$	79,896	$	70,869