Note 5 - Revenue; Accounts and Unbilled Receivables (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Disaggregation of Revenue [Table Text Block]

	For the Year Ended December 31, 2018
Type of Customer
CSB	$	52,491	95.2	%
Other		2,635	4.8	%
Total	$	55,126	100.0	%

Contract with Customer, Asset and Liability [Table Text Block]

	December 31, 2018		December 31, 2017
Accounts receivable	$	3,952	$	5,418
Unbilled receivables (Contract Assets)		2,170		2,504
Total accounts and unbilled receivables	$	6,122	$	7,922

As of

December 31, 2018

and 

December 31, 2017

management has determined no allowance for doubtful accounts is necessary. For the years ended

December 31, 2018

and 

December 31, 2017

,

44.6%

  and

56.9%

of service fee income was generated from

two

and

three

customers, respectively. As of

December 31, 2018

,  

60.9%

  of accounts and unbilled receivables was due from

four

customers and

95.3%

was due from

14

CSB customers.  As of

December 31, 2017

,

61.1%

  of accounts and unbilled receivables was due from

four

customers and

96.6%

was due from

15

CSB customers.