Available-for-Sale-Securities (Tables)

3 Months Ended

Mar. 31, 2015

Available-for-sale Securities [Abstract]

Schedule of Available-for-sale Securities Reconciliation [Table Text Block]

The following table is a summary of available-for-sale securities recorded in cash and cash equivalents or marketable securities in our Consolidated Balance Sheets (in thousands):

	March 31, 2015
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Money market funds	$	14,513.1	$	—	$	—	$	14,513.1
Total	$	14,513.1	$	—	$	—	$	14,513.1

Marketable Securities [Table Text Block]

Estimated fair values of available-for-sale securities are generally based on prices obtained from commercial pricing services. The following table summarizes the classification of the available-for-sale debt securities on our Consolidated Balance Sheets (in thousands):

	March 31, 2015
Cash and cash equivalents	$	14,513.1
Marketable securities	—
Total	$	14,513.1

Investments Classified by Contractual Maturity Date [Table Text Block]

The following table summarizes our portfolio of available-for-sale debt securities by contractual maturity (in thousands):

	March 31, 2015
	Amortized Cost		Estimated Fair Value
Less than one year	$	14,513.1	$	14,513.1
Greater than one year	—		—
Total	$	14,513.1	$	14,513.1