XML 27 R10.htm IDEA: XBRL DOCUMENT v3.8.0.1
Allowance for Doubtful Accounts
3 Months Ended
Mar. 31, 2018
Receivables [Abstract]  
Allowance for Doubtful Accounts

4. Allowance for Doubtful Accounts  

The summary of activity in the allowance for doubtful accounts is as follows (in thousands):

 

 

Three Months Ended

March 31,

 

 

2018

 

 

2017

 

Balance at the beginning of period

$

786

 

 

$

1,338

 

Bad debt expense (recovery)

 

95

 

 

 

(268

)

Write-offs

 

(67

)

 

 

(11

)

Balance at the end of period

$

814

 

 

$

1,059