Note 6 - Deferred Service Contract Revenue

3 Months Ended

Mar. 31, 2015

Deferred Revenue Disclosure [Abstract]

Deferred Revenue Disclosure [Text Block]

Note 6. Deferred Service Contract Revenue

The Company generates Service revenue from the sale of extended service contracts and from time and material services provided to customers who are not under a warranty or extended service contract. Service contract revenue is recognized on a straight-line basis over the period of the applicable contract. Service revenue, from customers whose systems are not under a service contract, is recognized as the services are provided.

The following table provides changes in the deferred service contract revenue balance for the three months ended March 31, 2015 and 2014 (in thousands):

	Three Months Ended
	March 31,
	2015			2014
Beginning Balance	$	12,949		$	11,637
Add: Payments received		2,802			3,711
Less: Revenue recognized		(3,223	)		(3,056	)
Ending Balance	$	12,528		$	12,292

Costs for extended service contracts were $1.7 million for both of the three months ended March 31, 2015 and 2014, respectively.