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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Revenue from External Customer [Line Items]    
Revenue from External Customers by Products and Services [Table Text Block]
Our sales mix for the years ended December 31, was as follows (in millions, except percentages):
 
2018
 
Percentage
 
2017
 
Percentage
Consolidated product sales
$
170.2

 
98.0
%
 
$
157.9

 
89.4
%
Consolidated pack sales and associate fees(a)
2.5

 
1.5
%
 
14.2

 
8.0
%
Consolidated other, including freight
0.9

 
0.5
%
 
4.6

 
2.6
%
Total consolidated net sales
$
173.6

 
100.0
%
 
$
176.7

 
100.0
%
  
Estimated useful lives of fixed assets  
The estimated useful lives of fixed assets are as follows:

 
Estimated useful life
Office furniture and equipment
5 to 7 years
Computer hardware and software
3 to 5 years
Automobiles
3 to 5 years
Leasehold improvements (1)
2 to 10 years
(1) The Company amortizes leasehold improvements over the shorter of the useful estimated life of the leased asset or the lease term.
Loyalty deferred revenue

Loyalty program
(in thousands)

Loyalty deferred revenue as of January 1, 2017
$
7,033

Loyalty points forfeited or expired
(5,895
)
Loyalty points used
(14,316
)
Loyalty points vested
17,836

Loyalty points unvested
1,748

Loyalty deferred revenue as of December 31, 2017
$
6,406


Loyalty deferred revenue as of January 1, 2018
$
6,406

Loyalty points forfeited or expired
(4,332
)
Loyalty points used
(11,398
)
Loyalty points vested
12,469

Loyalty points unvested
1,086

Loyalty deferred revenue as of December 31, 2018
$
4,231

  
Sales return reserve
For the years ended December 31, 2018 and December 31, 2017, our sales return reserve consisted of the following (in thousands):

Sales reserve as of January 1, 2017
$
129

Provision related to sales made in current period
1,274

Adjustment related to sales made in prior periods
3

Actual returns or credits related to current period
(1,156
)
Actual returns or credits related to prior periods
(133
)
Sales reserve as of December 31, 2017
$
117

 
 
Sales reserve as of January 1, 2018
$
117

Provision related to sales made in current period
1,198

Adjustment related to sales made in prior periods
(10
)
Actual returns or credits related to current period
(1,125
)
Actual returns or credits related to prior periods
(104
)
Sales reserve as of December 31, 2018
$
76

  
Concentration risk
Revenue from these products were as follows for the years ended December 31, 2018 and 2017 (in thousands, except percentages):
 
2018

2017
 
Sales by
product

% of total
net sales

Sales by
product

% of total
net sales
Advanced Ambrotose®
$
44,054


25.4
%

$
52,592


29.8
%
Ambrotose Life™
18,824


10.9
%

—


—
%
TruHealth™
17,537


10.1
%

16,652


9.4
%
Manapol® Powder
8,636


5.0
%

11,183


6.3
%
Ambrotose®
7,695


4.4
%

8,459


4.8
%
Total
$
96,746


55.8
%

$
88,886


50.3
%