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Operations by Business Segment (Tables)
 3 Months Ended
Apr. 04, 2015
Segment Reporting [Abstract]  
Schedule of segment reporting information, by segment [Table Text Block]
Segment information reconciled to consolidated external reporting information follows:
 
Utility
 
Residential and
Commercial
 
All
Other
 
Reconciling
Adjustments
 
 
Consolidated
Three Months Ended April 4, 2015
 
 
 
 
 
 
 
 
 
 
Revenues
$
100,383

 
$
73,457

 
$
452

 
$
—

 
 
$
174,292

Income (loss) from operations
3,885

 
(3,889
)
 
(2,615
)
 
(1,366
)
(a)
 
(3,985
)
Interest expense
 
 
 
 
 
 
(790
)
 
 
(790
)
Interest income
 
 
 
 
 
 
63

 
 
63

Other income (expense), net
 
 
 
 
 
 
(827
)
 
 
(827
)
Loss before income taxes
 
 
 
 
 
 
 
 
 
$
(5,539
)
Segment assets, total
$
148,924

 
$
144,532

 
$
—

 
$
87,393

(b)
 
$
380,849

 
 
 
 
 
 
 
 
 
 
 
Three Months Ended March 29, 2014
 
 
 
 
 
 
 
 
 
 
Revenues
$
89,292

 
$
67,807

 
$
288

 
$
—

 
 
$
157,387

Income (loss) from operations
2,785

 
(4,237
)
 
(2,516
)
 
(757
)
(a)
 
(4,725
)
Interest expense
 
 
 
 
 
 
(719
)
 
 
(719
)
Interest income
 
 
 
 
 
 
69

 
 
69

Other income (expense), net
 
 
 
 
 
 
(805
)
 
 
(805
)
Loss before income taxes
 
 
 
 
 
 
 
 
 
$
(6,180
)
Segment assets, total
$
140,643

 
$
130,437

 
$
—

 
$
70,126

(b)
 
$
341,206

 
Reconciling adjustments from segment reporting to consolidated external financial reporting include unallocated corporate items:

(a)
Reclassification of depreciation expense and allocation of corporate expenses.
(b)
Corporate assets include cash, prepaid expenses, corporate facilities, enterprise-wide information systems and other nonoperating assets.